The Core of High Density Interconnected PCB (HDI) for 3D Large Image Analysis
The core of high-density interconnect boards (HDI), located in vias
The circuit processing of multi-layer PCBs is no different from that of single-layer and double-layer PCBs, but the biggest difference lies in the through hole process.
The circuits are all etched, and the via holes are drilled and then plated with copper. Everyone involved in hardware development understands these, so we won't go into detail.
Multilayer circuit boards typically include through hole boards, first order boards
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